JoyNano 360W Switching Power Supply 12V 30A AC-DC Converter Transformer for 3D Printer, CCTV Surveillance LED Display Industrial Automation Stepper Motor and More [Upgraded Version] Converts AC voltage to 12V DC. LED Indicator. Output Current 30 Amp, Power 360 Watt. Efficiency more than 80%. Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection Widely used in 3D Printer, Industrial automation, LED display, communications, CNC Stepper, etc Efficient, long life, stable, and reliable - JoyNano Quality Warranty Constant voltage output to ensure the stability of the power supply. Efficient work and low temperature. Input voltage 110V/230V is selected by switch. Before power on please check input voltage avoiding damage. Safety Protection: Overvoltage protection, short circuit protection and overload protection. Hiccup mode, recovers automatically after faulty condition is removed. Upgraded Glass-Fiber Board offers high performance of electrical insulation. Premium Transformer converts incoming line voltage to desired output load easily. Input Voltage: AC110V/ 220V Output Voltage: 12V DC Output Current: 30A Power: 360W Max Screw Terminal Number: 9 Cooling: By Built-in DC Fan . Shell material: Aluminum case Dimension: 215 x 110 x 50 mm (L x W x H) 8.5 x 4.3 x 1.9 inch Net Weight: 860g 1.9lb L, N, GND: AC power input +V: DC power output &#034;+&#034; -V: DC power output &#034;-&#034; +V / ADJ: fine adjustment of output voltage Working temperature: -10 to 50 degree Celsius Storage temperature: -20 to 60 degree Celsius Environmental humidity: 10-95% In-door use only. Professional Installation of qualified electrician is highly recommended.